LTC4266CGW-PBF View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC4266CGW-PBF Datasheet PDF : 30 Pages
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LTC4266
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. AGND – VEE = 54V, AGND = DGND, and VDD – DGND = 3.3V unless
otherwise noted. (Notes 3, 4)
SYMBOL PARAMETER
Timing Characteristics
CONDITIONS
MIN TYP MAX
UNITS
tDET
tDETDLY
tCLE1
tME1
tCLE2
tME2
tCLE3
tPON
Detection Time
Detection Delay
First Class Event Duration
First Mark Event Duration
Second Class Event Duration
Second Mark Event Duration
Third Class Event Duration
Power On Delay in AUTO pin mode
Turn On Rise Time
Turn On Ramp Rate
Fault Delay
Midspan Mode Detection Backoff
Beginning to End of Detection (Note 7)
l 270
290
310
ms
From PD Connected to Port to Detection
Complete (Note 7)
l 300
470
ms
(Note 7)
l 11
12
13
ms
(Notes 7, 11)
l 6.8
8.6
10.3
ms
(Note 7)
l 11
12
13
ms
(Note 7)
l 19
22
ms
CPORT = 0.6µF (Note 7)
l
From End of Valid Detect to Application of l
Power to Port (Note 7)
0.1
ms
60
ms
(AGND – VOUT): 10% to 90% of
l 15
24
µs
(AGND – VEE), CPORT = 0.15µF (Note 7)
CPORT = 0.15µF (Note 7)
l
10
V/µs
From ICUT Fault to Next Detect
l 1.0
1.1
s
Rport = 15.5kΩ (Note 7)
l 2.3
2.5
2.7
s
Power Removal Detection Delay
From Power Removal After tDIS to Next
l 1.0
1.3
2.5
s
Detect (Note 7)
tSTART
Maximum Current Limit Duration During Port tSTART1 = 0, tSTART0 = 0 (Notes 7, 12)
l 52
62.5
66
ms
Start-Up
tLIM, tICUT Maximum Current Limit Duration After Port tICUT1 = 0, tICUT0 = 0 (Notes 7, 12)
Start-Up
l 52
62.5
66
ms
Maximum Current Limit Duty Cycle
(Note 7)
l 5.8
6.3
6.7
%
tMPS
Maintain Power Signature (MPS) Pulse Width Current Pulse Width to Reset Disconnect l 1.6
Sensitivity
Timer (Notes 7, 8)
3.6
ms
tDIS
Maintain Power Signature (MPS) Dropout tconf [1:0] = 00b (Notes 5, 12)
Time
l 320
350
380
ms
tMSD
Masked Shut Down Delay
(Note 7)
l
6.5
µs
tSHDN
Port Shut Down Delay
I2C Watchdog Timer Duration
(Note 7)
l
6.5
µs
l 1.5
2
3
s
Minimum Pulse Width for Masked Shut
Down
Minimum Pulse Width for SHDN
(Note 7)
(Note 7)
l3
µs
l3
µs
Minimum Pulse Width for RESET
(Note 7)
l 4.5
µs
4266fb
5
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